isl_ctx.c

   1 /*
   2  * Copyright 2008-2009 Katholieke Universiteit Leuven
   3  *
   4  * Use of this software is governed by the MIT license
   5  *
   6  * Written by Sven Verdoolaege, K.U.Leuven, Departement
   7  * Computerwetenschappen, Celestijnenlaan 200A, B-3001 Leuven, Belgium
   8  */
   9
  10 #include <isl_ctx_private.h>
  11 #include <isl/vec.h>
  12 #include <isl_options_private.h>
  13
  14 #define __isl_calloc(type,size)         ((type *)calloc(1, size))
  15 #define __isl_calloc_type(type)         __isl_calloc(type,sizeof(type))
  16
  17 void isl_handle_error(isl_ctx *ctx, enum isl_error error, const char *msg,
  18         const char *file, int line)
  19 {
  20         if (!ctx)
  21                 return;
  22
  23         isl_ctx_set_error(ctx, error);
  24
  25         switch (ctx->opt->on_error) {
  26         case ISL_ON_ERROR_WARN:
  27                 fprintf(stderr, "%s:%d: %s\n", file, line, msg);
  28                 return;
  29         case ISL_ON_ERROR_CONTINUE:
  30                 return;
  31         case ISL_ON_ERROR_ABORT:
  32                 fprintf(stderr, "%s:%d: %s\n", file, line, msg);
  33                 abort();
  34                 return;
  35         }
  36 }
  37
  38 static struct isl_options *find_nested_options(struct isl_args *args,
  39         void *opt, struct isl_args *wanted)
  40 {
  41         int i;
  42         struct isl_options *options;
  43
  44         if (args == wanted)
  45                 return opt;
  46
  47         for (i = 0; args->args[i].type != isl_arg_end; ++i) {
  48                 if (args->args[i].type != isl_arg_child)
  49                         continue;
  50                 options = find_nested_options(args->args[i].u.child.child,
  51                             *(void **)(((char *)opt) + args->args[i].offset),
  52                             wanted);
  53                 if (options)
  54                         return options;
  55         }
  56
  57         return NULL;
  58 }
  59
  60 static struct isl_options *find_nested_isl_options(struct isl_args *args,
  61         void *opt)
  62 {
  63         return find_nested_options(args, opt, &isl_options_args);
  64 }
  65
  66 void *isl_ctx_peek_options(isl_ctx *ctx, struct isl_args *args)
  67 {
  68         if (!ctx)
  69                 return NULL;
  70         if (args == &isl_options_args)
  71                 return ctx->opt;
  72         return find_nested_options(ctx->user_args, ctx->user_opt, args);
  73 }
  74
  75 isl_ctx *isl_ctx_alloc_with_options(struct isl_args *args, void *user_opt)
  76 {
  77         struct isl_ctx *ctx = NULL;
  78         struct isl_options *opt = NULL;
  79         int opt_allocated = 0;
  80
  81         if (!user_opt)
  82                 return NULL;
  83
  84         opt = find_nested_isl_options(args, user_opt);
  85         if (!opt) {
  86                 opt = isl_options_new_with_defaults();
  87                 if (!opt)
  88                         goto error;
  89                 opt_allocated = 1;
  90         }
  91
  92         ctx = __isl_calloc_type(struct isl_ctx);
  93         if (!ctx)
  94                 goto error;
  95
  96         if (isl_hash_table_init(ctx, &ctx->id_table, 0))
  97                 goto error;
  98
  99         ctx->stats = isl_calloc_type(ctx, struct isl_stats);
 100         if (!ctx->stats)
 101                 goto error;
 102
 103         ctx->user_args = args;
 104         ctx->user_opt = user_opt;
 105         ctx->opt_allocated = opt_allocated;
 106         ctx->opt = opt;
 107         ctx->ref = 0;
 108
 109         isl_int_init(ctx->zero);
 110         isl_int_set_si(ctx->zero, 0);
 111
 112         isl_int_init(ctx->one);
 113         isl_int_set_si(ctx->one, 1);
 114
 115         isl_int_init(ctx->two);
 116         isl_int_set_si(ctx->two, 2);
 117
 118         isl_int_init(ctx->negone);
 119         isl_int_set_si(ctx->negone, -1);
 120
 121         isl_int_init(ctx->normalize_gcd);
 122
 123         ctx->n_cached = 0;
 124         ctx->n_miss = 0;
 125
 126         ctx->error = isl_error_none;
 127
 128         return ctx;
 129 error:
 130         isl_args_free(args, user_opt);
 131         if (opt_allocated)
 132                 isl_options_free(opt);
 133         free(ctx);
 134         return NULL;
 135 }
 136
 137 struct isl_ctx *isl_ctx_alloc()
 138 {
 139         struct isl_options *opt;
 140
 141         opt = isl_options_new_with_defaults();
 142
 143         return isl_ctx_alloc_with_options(&isl_options_args, opt);
 144 }
 145
 146 void isl_ctx_ref(struct isl_ctx *ctx)
 147 {
 148         ctx->ref++;
 149 }
 150
 151 void isl_ctx_deref(struct isl_ctx *ctx)
 152 {
 153         isl_assert(ctx, ctx->ref > 0, return);
 154         ctx->ref--;
 155 }
 156
 157 void isl_ctx_free(struct isl_ctx *ctx)
 158 {
 159         if (!ctx)
 160                 return;
 161         if (ctx->ref != 0)
 162                 isl_die(ctx, isl_error_invalid,
 163                         "isl_ctx freed, but some objects still reference it",
 164                         return);
 165
 166         isl_hash_table_clear(&ctx->id_table);
 167         isl_blk_clear_cache(ctx);
 168         isl_int_clear(ctx->zero);
 169         isl_int_clear(ctx->one);
 170         isl_int_clear(ctx->two);
 171         isl_int_clear(ctx->negone);
 172         isl_int_clear(ctx->normalize_gcd);
 173         isl_args_free(ctx->user_args, ctx->user_opt);
 174         if (ctx->opt_allocated)
 175                 isl_options_free(ctx->opt);
 176         free(ctx->stats);
 177         free(ctx);
 178 }
 179
 180 struct isl_options *isl_ctx_options(isl_ctx *ctx)
 181 {
 182         if (!ctx)
 183                 return NULL;
 184         return ctx->opt;
 185 }
 186
 187 enum isl_error isl_ctx_last_error(isl_ctx *ctx)
 188 {
 189         return ctx->error;
 190 }
 191
 192 void isl_ctx_reset_error(isl_ctx *ctx)
 193 {
 194         ctx->error = isl_error_none;
 195 }
 196
 197 void isl_ctx_set_error(isl_ctx *ctx, enum isl_error error)
 198 {
 199         if (ctx)
 200                 ctx->error = error;
 201 }
 202
 203 void isl_ctx_abort(isl_ctx *ctx)
 204 {
 205         if (ctx)
 206                 ctx->abort = 1;
 207 }
 208
 209 void isl_ctx_resume(isl_ctx *ctx)
 210 {
 211         if (ctx)
 212                 ctx->abort = 0;
 213 }
 214
 215 int isl_ctx_aborted(isl_ctx *ctx)
 216 {
 217         return ctx ? ctx->abort : -1;
 218 }
 219
 220 int isl_ctx_parse_options(isl_ctx *ctx, int argc, char **argv, unsigned flags)
 221 {
 222         if (!ctx)
 223                 return -1;
 224         return isl_args_parse(ctx->user_args, argc, argv, ctx->user_opt, flags);
 225 }